2011-2015 Duramax LML P1 4" Installer Series Race Pipe w/ Muffler (CGMAL432) 1989 - 1998 Dodge Transmission & Drivetrains Everything you need is included

Everything you need is included to drop right in place of the old unit

but is capable of 650-700hp with larger injectors and supporting mods

By eliminating the rough

OEM Part Number: 35976

2011-2015 Duramax LML P1 4" Installer Series Race Pipe w/ Muffler (CGMAL432) 1989 - 1998 Dodge Transmission & Drivetrains Everything you need is included2011 2015 Duramax LML P1 4" Installer Series Race Pipe w Muffler (CGMAL432) The P1 Performance Products CGMAL432 is the perfect setup for the 2011 2015 GM Duramax that's being built to perform. The 4" Performance Race Pipe is backed by a P1 Performance Products 3 year warranty and is built in Canada with heavy duty aluminized steel it offers value without compromising on build quality.